Daniel Hortelano Roig

daniel h r

Daniel Hortelano Roig

Department of Materials 
University of Oxford 
Parks Road 
Oxford OX1 3PH
UK

Email: daniel.hortelanoroig@st-annes.ox.ac.uk
 

The properties of plasticity in crystalline solids are governed by their dislocation dynamics. Discrete dislocation dynamics (DDD) is a micron-scale computational approach which models dislocations as a network of nodes connected by straight line segments. While DDD is an incredibly useful tool in developing phenomenological models of plasticity, it is notoriously difficult to implement. DDD must account for realistic phenomena such as grain boundaries, inclusions, atomic diffusion, and crystallographic anisotropy. In addition, the ensemble of segments results in an N-body problem which yields a performance bottleneck. As a result, performing DDD simulations with large plastic strains (>0.5%) is still practically unfeasible.

Daniel joins the OMG team having completed a BSc in Theoretical Physics at the University of Guelph, Canada, followed by the MSc in Mathematical and Theoretical Physics offered by the Mathematical Institute at the University of Oxford. Daniel is a Materials DPhil student working with Edmund Tarleton and Angus Wilkinson on developing three-dimensional DDD simulations. A goal of his project is to extend the capabilities of the current generation of DDD codes and enable large-scale DDD simulations of materials in finite domains, such as in microcantilevers. His particular focus is in modelling materials with anisotropic hexagonal close-packed (HCP) crystallographic structures.